Twetch Wallet Docs

The Twetch Wallet browser extension will inject an object called bitcoin on the window object of any web application the user visits. The bitcoin object is also available on window.twetch to prevent namespace collisions.

To detect if a browser extension using this API is installed, you can check for the existence of the bitcoin object.

To make it easy to detect Twetch Wallet specifically, the extension adds an additional isTwetch flag.

const isTwetchInstalled = window.bitcoin && window.bitcoin.isTwetch

If Twetch Wallet is not installed, we recommend you redirect your users to our website. Altogether, this may look like the following.

const getProvider = () => {
  if ("bitcoin" in window) {
    const provider = window.bitcoin;
    if (provider.isTwetch) {
      return provider;
    }
  }
  window.open("https://twetch.com/downloads", "_blank");
};